title: Concise synthesis of ricciocarpin A and discovery of a more potent analogue.
abstract: Cascade reactions enable the rapid build-up of molecular complexity from relatively simple starting materials. Both rapid construction and the ability to prepare related structures are crucial to the study of biological activities. Here, we report an efficient, highly enantioselective and diastereoselective total synthesis of ricciocarpin A. The key feature of the synthesis is a one-pot, three-step, organocatalytic reductive Michael-Tishchenko cascade. The conciseness and flexibility of this approach not only resulted in the synthesis of the natural product, but also of its antipode and four other structural analogues. A preliminary biological evaluation of these compounds identified an analogue with significantly improved molluscicidal activity.
authors.affiliation: Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany.
authors.forename: Anna
authors.initials: A
authors.lastname: Michrowska
authors.forename: Benjamin
authors.initials: B
authors.lastname: List
mesh_terms: D000818:Animals; D001700:Biomphalaria / Q000187:drug effects; D002384:Catalysis; D004353:Drug Evaluation, Preclinical; D005663:Furans / Q000138:chemical synthesis / Q000737:chemistry*; D008968:Molecular Conformation; D008975:Molluscacides / Q000138:chemical synthesis* / Q000737:chemistry; D013237:Stereoisomerism
chemical_list: D005663:Furans; D008975:Molluscacides; C476521:ricciocarpin A